Definitions for "Hideous"
Frightful, shocking, or offensive to the eyes; dreadful to behold; as, a hideous monster; hideous looks.
Distressing or offensive to the ear; exciting terror or dismay; as, a hideous noise.
Hateful; shocking.
Keywords:  terrifying, repulsive, mask, ugly, scar
so extremely ugly as to be terrifying; "a hideous scar"; "a repulsive mask"